/
pipeline.go
76 lines (67 loc) · 2.07 KB
/
pipeline.go
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// Copyright 2018-2021 Burak Sezer
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package dmap
import (
"bytes"
"github.com/buraksezer/olric/pkg/neterrors"
"io"
"github.com/buraksezer/olric/internal/protocol"
)
func (s *Service) extractPipelineMessage(conn io.ReadWriteCloser, response *bytes.Buffer) error {
buf := bufferPool.Get()
defer bufferPool.Put(buf)
_, err := protocol.ReadMessage(conn, buf)
if err != nil {
return err
}
preq := protocol.NewDMapMessageFromRequest(buf)
err = preq.Decode()
// Return an error message in pipelined response.
if err != nil {
preq.SetStatus(protocol.StatusErrInternalFailure)
preq.SetValue([]byte(err.Error()))
return nil
}
f, ok := s.operations[preq.Op]
if !ok {
preq.SetStatus(protocol.StatusErrInternalFailure)
preq.SetValue([]byte(neterrors.ErrUnknownOperation.Error()))
return nil
}
presp := preq.Response(response)
// Call its function to prepare a response.
f(presp, preq)
return presp.Encode()
}
func (s *Service) pipelineOperation(w, r protocol.EncodeDecoder) {
req := r.(*protocol.PipelineMessage)
conn := protocol.NewBytesToConn(req.Value())
response := bufferPool.Get()
defer bufferPool.Put(response)
// Decode the pipelined messages into an in-memory buffer.
for {
err := s.extractPipelineMessage(conn, response)
if err == io.EOF {
// It's done. The last message has been read.
break
}
if err != nil {
neterrors.ErrorResponse(w, err)
return
}
}
// Create a success response and assign pipelined responses as value.
w.SetStatus(protocol.StatusOK)
w.SetValue(response.Bytes())
}